城市技术创新促进城乡统筹发展的研究

揭示了城市技术创新系统和城乡统筹发展的内涵,并在技术创新、增长极和区域经济等理论框架下阐述了城市技术创新与城乡统筹发展的关系,进而提出城市技术创新促进城乡统筹的路径。     

标准体系的比例型寿命使用期模型与分析

本文在基于标准被废除按比例进行时的标准体系使用期的两个新模型。首先给出了模型假设条件,然后定义了标准使用期。根据假设给出了两个模型条件下的标准使用期公式,最后通过数值示例说明了标准使用期的公式使用。     

Little higgs models and T parity

Little Higgs models are an interesting extension of the Standard Model at the TeV scale. They provide a simple and attractive mechanism of electroweak symmetry breaking. We review one of the simplest models of this class, the Littlest Higgs model, and its extension with T parity. The model with T parity satisfies precision electroweak constraints without fine-tuning, contains an attractive dark matter candidate, and leads to interesting phenomenology at the Large Hadron Collider (LHC).     

Refractive index of standard oils as a function of wavelength and temperature

The refractive indices (n) of eight standard oils from Physikalisch Technische Bundesanstalt, Germany were determined with an accuracy of ±1×10⁻⁴ by using Abbe Refractometer. The measurements were performed at temperature 20°C in the spectral range 0.4–0.7 μm. The experimental data were fitted to the simple Cauchy dispersion formula and the results were found to be consistent within the limits of experimental error. In all cases, the refractive index decreased monotonically with increasing wavelength. The refractive indices (n) of these oils have been measured as a function of the temperature t (20°C up to 50°C) at λ=0.589 μm and were found to have linear temperature dependencies. The refractive indices of the studied oils and the uncertainty in their values are calculated at λ=0.589. The Lorentz–Lorenz (L–L) formula has been tested and it was found to be valid with a maximum deviation of 0.4% and was used to calculate the molecular polarizability θ.     

草酰胺分子构型、稳定性、IR光谱及分子轨道的密度泛函与从头算研究

运用多种密度泛函理论 (DFT)和从头算 (abinitio)方法研究了草酰胺顺、反异构体的分子几何构型 ,结果表明Beck88交换函数与LYP非局域相关函数形成杂化的DFT方法B3LYP与MP2方法计算结果比较吻合。在此基础上选择B3LYP方法对草酰胺分子电子结构、红外光谱和前线分子轨道组成进行了系统研究 ;与实验事实对比分析了气态草酰胺分子中配位原子的反应活性     

Fashion Information Database

ＩｎｔｈｅｐａｓｔｓｉｘｙｅａｒｓＣｈｉｎａｗａｓｏｃｃｕｐｙｉｎｇｔｈｅｆｉｒｓｔｐｏｓｉｔｉｏｎｉｎｔｈｅａｍｏｕｎｔｏｆｆａｓｈｉｏｎｍａｎｕｆａｃｔｕｒｅａｎｄｅｘｐｏｒｔ.Ａｔｔｈｅｓａｍｅｔｉｍｅ,ｔｈｅａｍｏｕｎｔｏｆｔｅｘｔｉｌｅ＆ｆａｓｈｉｏｎｐｒｏｄｕｃｔｉｏｎａｃｃｏｕｎｔｓｆｏｒ 15 %ｏｆＧＤＰａｎｄｅｘｐｏｒｔａｍｏｕｎｔａｃｃｏｕｎｔｓｆｏｒ1/ 4ｏｆＧＥＰ .Ｈｏｗｅｖｅｒ,Ｃｈｉ ｎａｄｏｅｓｎｏｔｐｌａｙａｌｅａｄｉｎｇｒｏｌｅｉｎｇｌｏｂａｌｆａｓｈｉｏｎｉｎｄｕｓｔ…     

大学《现代教育技术》课程教学中探究式学习模式的应用与思考

本文从探究式学习的定义和特征出发,反对不分教学对象差异的"唯探究主义",在大学《现代教育技术》课程的教学中倡导面向全体学生,开展多样化的探究式学习。这就要求在教学过程中,辩证地处理学生自主与教师指导的关系,强调教师与学生的相互倾听,珍视探究中学生的个人观念、独特感受和体验,并引导学生积极反思。     

Specht modules and chromatic polynomials

An explicit formula for the chromatic polynomials of certain families of graphs, called bracelets', is obtained. The terms correspond to irreducible representations of symmetric groups. The theory is developed using the standard bases for the Specht modules of representation theory, and leads to an effective means of calculation.     

Physics in Melbourne

I survey highlights of the practice of physics and allied sciences in Melbourne,Australia, from the 1850s, soon after Europeans first settled in the area, to the present. I note recognizable sites of past and current physical-science activity that may be visited, as well as exhibits of historic items of physics apparatus. I trace the role of physics, in the course of a century and a half, in the evolution of a pioneering settlement into a large city embedded in a modern industrial economy.     

La（NCS）3.4.5H2O和B15C5在乙醇中的相平衡及热化学研究

采用半微量相平衡方法测定了三元体系Ｌａ（ＮＣＳ）３．４．５Ｈ２Ｏ－Ｂ１５Ｃ５－Ｃ２Ｈ５ＯＨ在２９８．１５Ｋ的溶解度，测定了各饱和溶液的折光率。